Giant esophageal fibrovascular polyp with use of Sengstaken-Blakemore tube during surgery: A case report

Figure 2 Histopathological examination. A: Histopathological examination (HE) staining revealed that the tumor surface was covered by stratified squamous epithelium, with marked thickening of the submucosa, which was composed of loose connective tissue, numerous thick-walled vessels, and fibrous tissue, accompanied by prominent stromal edema and myxoid changes (HE staining, objective ×4, scale bar = 1025 μm); B: HE staining revealed submucosal fibrovascular proliferation, with no hyperchromatic atypical lipoblasts or atypical stromal cells identified (HE staining, objective ×10, scale bar = 225 μm).